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There are certain cartographic and technological limitations in the assessment of forest cover.
» Since the resolution of sensor LISS-III is 23.5 m the plantations along road, canal and railway line of a width less than the resolution
are not recorded.
» Considerable details on ground may be obscured in areas having clouds and shadows. It is difficult to interpret such areas without
the help of collateral data.
» The reflectance of young plantations with small crown and low chlorophyll content is not recorded by satellite sensors.
» Gregarious occurrence of bushy vegetations and agricultural crops like lantana, tea and coffee poses problems in delineation of
forests as their reflectance is similar to that of the forest.
» Recorded forest areas cannot be delineated if their boundaries are unavailable.
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Species composition is not
identifiable with the images (of
above mentioned resolution) used.
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